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Ujiie G, Murase M, Asai H, Igawa M, Okuyama A, Seo K, Ichizuka K, Ikeda H. Intrapartum prophylactic efficacy of ampicillin versus clindamycin in preventing vertical transmission of group B Streptococcus. Acta Paediatr 2024. [PMID: 38578153 DOI: 10.1111/apa.17230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
AIM To compare the prophylactic efficacy of ampicillin and clindamycin against vertical transmission of group B Streptococcus from mothers to their infants by evaluating the rates of group B Streptococcus colonisation. METHODS We retrospectively extracted data for mothers who delivered at Showa University Northern Yokohama Hospital between 1 October 2017 and 31 March 2021 and tested positive for antepartum group B Streptococcus, and their infants. The chi-square test was used to compare the rates of group B Streptococcus colonisation, sepsis, and meningitis. We conducted a multivariate logistic regression analysis, including the time interval between membrane rupture and delivery, chorioamnionitis, and maternal intrapartum fever (≥38.0°C). RESULTS Two hundred fifty-nine mothers and their infants were eligible. Ampicillin and clindamycin were administered to 150 and 109 mothers, respectively. In the ampicillin and clindamycin groups, 12.0% (18/150) and 37.6% (41/109) infants were group B Streptococcus positive, respectively. The rate of group B Streptococcus colonisation among infants was significantly lower in the ampicillin group (p < 0.001). Multivariate regression analysis showed similar results (p < 0.001). No sepsis or meningitis cases were observed in either group. CONCLUSION Prophylactic efficacy of clindamycin against the vertical transmission of group B Streptococcus is lower than that of ampicillin.
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Affiliation(s)
- Gakuto Ujiie
- Children Medical Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Masahiko Murase
- Children Medical Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Hideyuki Asai
- Children Medical Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Mio Igawa
- Children Medical Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Ayumi Okuyama
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Hirokazu Ikeda
- Children Medical Center, Showa University Northern Yokohama Hospital, Yokohama, Japan
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Liu SJ, Pak J, Zou C, Payne E, Foster K, Vasudevan H, Casey-Clyde T, Seo K, O'Loughlin T, Wu D, Lim D, Ozawa T, de Groot J, Berger MS, Weiss W, Gilbert LA, Raleigh D. Identifying Gene-Treatment Interactions and Targetable Radiation Vulnerabilities in Glioblastoma through Coupling of In Vivo CRISPR Perturbation and Single Cell Transcriptomics. Int J Radiat Oncol Biol Phys 2023; 117:S102. [PMID: 37784271 DOI: 10.1016/j.ijrobp.2023.06.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Glioblastoma (GBM) is an incurable brain tumor comprised of dynamic malignant cell states and microenvironment components that underlie treatment resistance. Here we use genome-wide CRISPR/Cas9 functional genomics to define biological drivers and therapeutic vulnerabilities across human and mouse GBM models. To interrogate these mechanisms in the context of the tumor microenvironment and in vivo physiology, we established in vivo Perturb-seq intracranially, a technique coupling functional genomics with single cell transcriptomics, where each cell is an individual experiment. MATERIALS/METHODS Orthotopic intracranial tumor models were established using human (GBM6, GBM43) or mouse (GL261, SB28) GBM cells stably expressing CRISPR interference (CRISPRi) machinery. Perturb-seq target selection for phenotyping of gene-treatment interactions was performed using genome-wide CRISPRi screens ± radiotherapy in cell cultures. Dual sgRNA lentivirus libraries were transduced either ex vivo prior to intracranial GBM cell transplantation or in vivo using intratumor convection enhanced delivery (CED). Transcriptional phenotyping was performed using single-cell RNA-seq with CRISPR direct capture following focal brain radiotherapy (2 Gy x 5) or mock treatment. GBM cell states were validated using single-nucleus RNA-seq data from 86 primary-recurrent patient-matched GBMs. Mechanistic and functional validation was performed using small molecule inhibitors, immunohistochemistry, clonogenic assays, and in vivo survival experiments. RESULTS In vivo Perturb-seq ± radiotherapy of 48 genes underlying GBM radiotherapy responses, which were enriched for DNA damage response and metabolic pathways, was performed in > 425,000 single cells. Radiotherapy induced 16 distinct GBM cell states, and genetic perturbations reprogrammed these cell states in a treatment-dependent fashion. Quantitative modeling of gene/radiotherapy interactions using high dimensional manifolds revealed in vivo-specific genetic dependencies. We revealed a critical role for Prkdc, the catalytic subunit of DNA-dependent protein kinase (DNA-PK), as a radiotherapy sensitizer through regulation of cell intrinsic growth and oxidative stress pathways, and cell extrinsic interferon and signaling pathways that altered cell-cell interactions in vivo. These pathways were also disrupted in single-nucleus RNA-seq analysis of post-radiotherapy human GBM tumors. Inhibition of Prkdc using a Food and Drug Administration approved small molecule sensitized GBM cells to radiotherapy and extended survival in mice harboring human intracranial xenografts. CONCLUSION We establish in vivo Perturb-seq in orthotopic GBM models as a platform for simultaneous functional genomic discovery and characterization of therapeutic targets, revealing an underappreciated role for Prkdc in GBM tumors in vivo that is targetable using small molecules. These tools are adaptable for a wide range of disease models and treatment modalities.
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Affiliation(s)
- S J Liu
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - J Pak
- University of California, San Francisco, San Francisco, CA
| | - C Zou
- University of California, San Francisco, San Francisco, CA
| | - E Payne
- University of California, San Francisco, San Francisco, CA
| | - K Foster
- University of California, San Francisco, San Francisco, CA
| | - H Vasudevan
- University of California, San Francisco, Department of Radiation Oncology, San Francisco, CA
| | - T Casey-Clyde
- University of California, San Francisco, San Francisco, CA
| | - K Seo
- University of California San Francisco, SAN FRANCISCO, CA
| | - T O'Loughlin
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - D Wu
- University of California, San Francisco, San Francisco, CA
| | - D Lim
- University of California San Francisco, San Francisco, CA
| | - T Ozawa
- University of California, San Francisco, San Francisco, CA
| | - J de Groot
- University of California, San Francisco, San Francisco, CA
| | - M S Berger
- University of California San Francisco, Department of Neurological Surgery, San Francisco, CA
| | - W Weiss
- University of California, San Francisco, San Francisco, CA
| | - L A Gilbert
- University of California, San Francisco, San Francisco, CA
| | - D Raleigh
- University of California San Francisco, Department of Radiation Oncology, San Francisco, CA
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Brookshire C, Robinson D, Seo K. Carbapenemase-producing ST307 Klebsiella pneumoniae in dogs. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00584-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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4
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Hong J, Seo K, Hwang W, Moon M. 303P Long-term oncologic outcomes for patients undergoing volatile versus intravenous anesthesia for non-small cell lung cancer surgery. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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Ogura S, Seo K, Ichihara M, Ichizuka K, Nagatsuka M. Clinical Utility of the Geriatric Nutritional Risk Index Before Surgical Intervention for Epithelial Ovarian Cancer Patients: A Retrospective Study. J Clin Med Res 2022; 14:409-415. [PMID: 36406943 PMCID: PMC9635807 DOI: 10.14740/jocmr4816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 10/06/2022] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The aim of the study is to analyze the impact of the geriatric nutritional risk index (a patient nutritional assessment item) on the prognoses of epithelial ovarian cancer patients. METHODS In this retrospective study conducted at a single hospital, we retrospectively analyzed 75 epithelial ovarian cancer patients who underwent surgical treatment at our hospital from 2010 to 2015. The geriatric nutritional risk index cut-off value was calculated using the receiver operating characteristic curve. Patients were divided into two groups on the basis of the calculated value. Kaplan-Meier curves were prepared for each group, and the difference in survival rates was calculated using the log-rank test. Cox proportional hazards regression analysis was used to compare other factors that affect prognosis. RESULTS The geriatric nutritional risk index was calculated to be 97.3. The survival rate was 61.9% for the group of patients with an index value > 97.3, and 39.4% for patients with an index value < 97.3 at 48 months (P < 0.001). A univariate analysis was performed with the following variables: age > 60 years, albumin level < 3.5 g/dL, body mass index < 22, presence of ascites, cancer antigen 125 level > 35 U/mL, type of tumor tissue, residual lesion, and geriatric nutritional risk index < 97.3. Albumin level, residual lesion, and geriatric nutritional risk index showed significant differences. A multivariate analysis was also performed, and only the geriatric nutritional risk index showed a significant difference (P = 0.0481). CONCLUSIONS The geriatric nutritional risk index may have a strong influence on the prognoses of epithelial ovarian cancer patients. We recommend utilizing these findings in daily clinical practice and incorporating them into treatment strategies for epithelial ovarian cancer.
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Affiliation(s)
- Shinji Ogura
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Kanagawa, Japan
| | - Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Kanagawa, Japan,Corresponding Author: Kohei Seo, Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Tsuzuki- ku, Yokohama-shi, Kanagawa 224-8503, Japan.
| | - Mitsuyoshi Ichihara
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Kanagawa, Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Kanagawa, Japan
| | - Masaaki Nagatsuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Kanagawa, Japan
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Ichizuka K, Seo K, Izudepski T, Nagatsuka M. High-intensity focused ultrasound for noninvasive fetal therapy. J Med Ultrason (2001) 2022:10.1007/s10396-022-01199-2. [PMID: 35278169 DOI: 10.1007/s10396-022-01199-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 01/27/2022] [Indexed: 10/18/2022]
Abstract
High-intensity focused ultrasound (HIFU) consists of an ultrasonic beam that is focused within the body to induce tissue necrosis through both heat energy and as a result of cavitation, which occurs without damaging any intervening tissues. Therefore, it is possible to cauterize and treat tumors without surgical invasion by administering HIFU irradiation from outside the body. This approach has been clinically applied in various fields in recent years, and fetal therapy is no exception, with several clinical applications reported, mainly in basic experiments. This review summarizes the recent basic and clinical findings focusing on fetal treatment with HIFU.
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Affiliation(s)
- Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasakichuo, Tsuduki-ku, Yokohama City, Kanagawa, 224-8503, Japan.
| | - Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasakichuo, Tsuduki-ku, Yokohama City, Kanagawa, 224-8503, Japan
| | - Tetsuya Izudepski
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasakichuo, Tsuduki-ku, Yokohama City, Kanagawa, 224-8503, Japan
| | - Masaaki Nagatsuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasakichuo, Tsuduki-ku, Yokohama City, Kanagawa, 224-8503, Japan
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Oshita Y, Seo K, Yokoyama K, Kanzaki K. Mepivacaine nerve root block and oxycodone improve pain management in pregnancy with a metastatic bone tumor but compromise newborn respiratory health. J Anaesthesiol Clin Pharmacol 2022; 38:334-336. [PMID: 36171934 PMCID: PMC9511838 DOI: 10.4103/joacp.joacp_539_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/28/2021] [Accepted: 06/03/2021] [Indexed: 12/24/2022] Open
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Choudhury A, Magill S, Eaton C, Prager B, Chen W, Seo K, Lucas C, Villanueva-Meyer J, Vasudevan H, Liu S, Cady M, Zhang M, Braunstein S, Oberheim N, Perry A, Solomon D, Costello J, McDermott M, Rich J, Raleigh D. Meningioma DNA Methylation Grouping Reveals Biologic Drivers and Therapeutic Vulnerabilities. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Date T, Shigeno K, Hiroshima M, Seo K, Sato M, Tebayashi S, Sato S. Verbascoside from Verbena incompta is a plant root growth inhibitor. Biosci Biotechnol Biochem 2021; 85:1602-1608. [PMID: 34003212 DOI: 10.1093/bbb/zbab090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 05/11/2021] [Indexed: 11/15/2022]
Abstract
The use of biopesticides has expanded rapidly in recent years; however, their use in weed control is less advanced. Herein, we describe the development of a weed control agent by screening 208 plant extracts (104 species) for their plant growth-inhibition activities, which resulted in 142 active samples (from 89 plant species). Verbascoside, isolated from the shoots of Verbena incompta, was identified as a growth inhibitor against rice root (EC50, 1.75 m m), and its root growth-inhibition activity was also confirmed in radish, tomato, and Lotus japonicus. Verbascoside is composed of hydroxytyrosol (EC50,12.51 m m) and caffeic acid (EC50, 4.08 m m), 2 poorly water-soluble phenolic components with weak growth-inhibition activities, and 2 sugars, which are more soluble but inactive. The plant apparently developed a more active and highly soluble compound by condensing these 4 components. We conclude that a biopesticide containing verbascoside may be useful for weed-control purposes.
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Affiliation(s)
- Tomonori Date
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Kanamu Shigeno
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Megumi Hiroshima
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Kohei Seo
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Masashi Sato
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, Miki, Kagawa, Japan
| | - Shinichi Tebayashi
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
| | - Shushi Sato
- Faculty of Agriculture and Marine Science, Kochi University, Nankoku, Kochi, Japan
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Nakamura T, Seo K, Okuyama A, Ichizuka K, Sekizawa A, Nagatsuka M. Infective endocarditis due to Streptococcus agalactiae in the puerperal period. J Obstet Gynaecol Res 2021; 47:2238-2241. [PMID: 33754408 DOI: 10.1111/jog.14757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 02/21/2021] [Accepted: 03/10/2021] [Indexed: 11/30/2022]
Abstract
Streptococcus agalactiae, also known as group B Streptococcus, is a species of bacteria occasionally detected in the vagina and/or rectum of pregnant women. This report describes the case of a 33-year-old woman who developed infective endocarditis on puerperal day 17, owing to group B Streptococcus, and required lifesaving surgery. The patient was rushed to our hospital with chief complaints of fever and fatigue. After hospitalization, antibiotics were administered; however, the symptoms did not improve. Following a detailed examination, vegetation was found in the heart, suggestive of infective endocarditis. Surgical removal of the vegetation improved the patient's condition. The development of group B Streptococcus infection and infective endocarditis in a pregnant woman with no risk factors is rare. This case confirms that this patient's life was saved by a timely diagnosis and appropriate therapeutic intervention.
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Affiliation(s)
- Takeshi Nakamura
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama-shi, Kanagawa, Japan
| | - Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama-shi, Kanagawa, Japan
| | - Ayumi Okuyama
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama-shi, Kanagawa, Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama-shi, Kanagawa, Japan
| | - Akihiko Sekizawa
- Department of Obstetrics and Gynecology, Showa University Hospital, Shinagawa, Japan
| | - Masaaki Nagatsuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama-shi, Kanagawa, Japan
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Vasudevan H, Magill S, Seo K, Villanueva-Meyer J, Choudhury A, Liu S, Pekmezci M, Findakly S, Hilz S, LaStella S, Braunstein S, Oberheim N, Aghi M, Theodosopoulos P, Sneed P, Berger M, McDermott M, Lim D, Ulian E, Costello J, Raleigh D. Multiplatform Genomic Profiling and Magnetic Resonance Imaging Identify Molecular and Radiologic Determinants of Intratumor Heterogeneity Underlying Aggressive Behavior in Meningioma. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Sekine A, Seo K, Matsukura S, Sato M, Shinozaki-Ushiku A, Ogura T, Kitami A, Kadokura M, Dohi S, Ichizuka K, Nagatsuka M. A case report of idiopathic pleuroparenchymal fibroelastosis with severe respiratory failure in pregnancy. BMC Pulm Med 2020; 20:264. [PMID: 33054813 PMCID: PMC7556914 DOI: 10.1186/s12890-020-01308-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/04/2020] [Indexed: 11/10/2022] Open
Abstract
Background Idiopathic pleuroparenchymal fibroelastosis (IPPFE) is a rare lung disease that manifests as parenchymal fibrosis of the upper lung lobe and pleura. There have been no reports of IPPFE complicating pregnancy. Here, we report a case of IPPFE that deteriorated rapidly during pregnancy. Case presentation A 29-year-old woman presented with dyspnea and dry cough at 19 weeks of gestation. IPPFE with acute exacerbation was suspected on chest computed tomography (CT). Despite steroid treatment, her condition progressed. A cesarean section was performed at 28 weeks of gestation. On postoperative day 26, she underwent living-donor lung transplantation. She was discharged a year after transplantation. Conclusion Our experience suggested that when pregnancy is complicated by PPFE, the disease may deteriorate rapidly. In this case, even though IPPFE with acute exacerbation was diagnosed during pregnancy, live birth was achieved, and the mother survived after lung transplantation. Lung transplantation should be considered in these patients because, once advanced, pulmonary lesions may be irreversible.
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Affiliation(s)
- Aiko Sekine
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki- ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki- ku, Yokohama-shi, Kanagawa, 224-8503, Japan.
| | - Satoshi Matsukura
- Respiratory Disease Center, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki-ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Masaaki Sato
- Department of Thoracic Surgery, University of Tokyo Graduate School of Medicine, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Aya Shinozaki-Ushiku
- Department of Pathology, University of Tokyo Graduate School of Medicine, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Takashi Ogura
- Department of Respiratory Medicine, Kanagawa Cardiovascular and Respiratory Center, Tomiokahigasi 6-16-1, Kanazawa-ku, Yokohama-shi, Kanagawa, Japan
| | - Akihiko Kitami
- Respiratory Disease Center, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki-ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Mitsutaka Kadokura
- Respiratory Disease Center, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki-ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Satoshi Dohi
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki- ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki- ku, Yokohama-shi, Kanagawa, 224-8503, Japan
| | - Masaaki Nagatsuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Chigasaki-chuo 35-1, Tsuzuki- ku, Yokohama-shi, Kanagawa, 224-8503, Japan
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Seo K, Park Y, Kim D, Shin J. LIMB GIRDLE MUSCULAR DYSTROPHIES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Seo K, Ichizuka K, Okai T, Dohi S, Nakamura M, Hasegawa J, Matsuoka R, Yoshizawa S, Umemura SI, Nagatsuka M, Sekizawa A. Treatment of twin-reversed arterial perfusion sequence using high-intensity focused ultrasound. Ultrasound Obstet Gynecol 2019; 54:128-134. [PMID: 30136326 DOI: 10.1002/uog.20101] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 07/31/2018] [Accepted: 08/10/2018] [Indexed: 06/08/2023]
Abstract
We describe our experience of high-intensity focused ultrasound (HIFU) for fetal therapy in twin-reversed arterial perfusion (TRAP) sequence. Six pregnant women underwent HIFU therapy, five before 16 weeks and one at 26 weeks. Two types of HIFU system were used: the first-generation system, which comprised a biaxial transducer and continuous exposure pattern, and the second-generation system, which comprised a coaxial transducer and sequential exposure pattern. The first-generation apparatus was used in four cases and the second-generation apparatus was used in two. In three cases, occlusion of the blood vessels mediating flow to the acardiac twin was achieved by HIFU. Two cases experienced intrauterine fetal death despite vessel occlusion. The total survival rate of pump fetuses 2 years after HIFU was 67% and the efficiency rate (the proportion of cases with occlusion or reduced blood flow on ultrasound after HIFU) was 83%. After more than 2 years of follow-up, the surviving infants had no severe clinical complications and no postnatal developmental problems. There was no significant difference in survival rate compared with TRAP cases managed expectantly. Given that complete occlusion of the blood vessels was not achieved in half of the cases, we could not show that HIFU therapy is superior to other treatments. However, HIFU can reduce the cardiac load of the pump fetus and, as it does not require uterine puncture for fetal therapy, there were no fatal complications, such as bleeding, rupture of membranes or infection. Thus, HIFU therapy may represent a less-invasive treatment for TRAP sequence in early pregnancy. Copyright © 2018 ISUOG. Published by John Wiley & Sons Ltd.
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Affiliation(s)
- K Seo
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - K Ichizuka
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - T Okai
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - S Dohi
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - M Nakamura
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - J Hasegawa
- St Marianna University, School of Medicine, Department of Obstetrics and Gynecology, Kanagawa, Japan
| | - R Matsuoka
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - S Yoshizawa
- Tohoku University, Graduate School of Biomedical Engineering, Miyagi, Japan
| | - S-I Umemura
- Tohoku University, Graduate School of Biomedical Engineering, Miyagi, Japan
| | - M Nagatsuka
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
| | - A Sekizawa
- Showa University, School of Medicine, Department of Obstetrics and Gynecology, Tokyo, Japan
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Seo K, Dohi S, Ishikawa T, Ichizuka K, Sekizawa A, Nagatsuka M. Modified laparoscopic cervicoisthmic cerclage in early pregnancy for refractory cervical incompetence: A case report. J Obstet Gynaecol Res 2019; 45:1597-1602. [PMID: 31137082 DOI: 10.1111/jog.14004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 04/28/2019] [Indexed: 11/26/2022]
Abstract
Modified laparoscopic cerclage was developed as an easy laparoscopic approach during pregnancy, with sutures placed lateral to the uterine vessels. To the best of our knowledge, its successful use in the first trimester has not been reported in Japan. Additionally, there are no published data on chronological assessment of feto-placental circulation using Doppler. Here, we present the case of a 31-year-old Japanese woman (gravida 2, para 1) with refractory cervical incompetence who had a history of preterm birth at 32 weeks of gestation and cervical conization. Modified laparoscopic cervicoisthmic cerclage was performed. Doppler findings showed normal feto-placental circulation before and after the procedure. Her pregnancy progressed uneventfully with no significant feto-placental circulation or obstetric complications, and the baby showed normal growth. Elective cesarean section was performed at 37 + 0 weeks' gestation. Modified laparoscopic cervicoisthmic cerclage is suggested as one of the treatment methods for pregnant women with refractory cervical incompetence.
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Affiliation(s)
- Kohei Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Satoshi Dohi
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Tetsuya Ishikawa
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Tokyo, Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
| | - Akihiko Sekizawa
- Department of Obstetrics and Gynecology, Showa University School of Medicine, Tokyo, Japan
| | - Masaaki Nagatsuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, Yokohama, Japan
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16
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Kang S, Park E, Seo K. A new treatment for presumed corneal epithelial inclusion cyst in a shih-tzu dog. J Small Anim Pract 2019; 61:776-781. [PMID: 31016746 DOI: 10.1111/jsap.13008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 09/22/2018] [Accepted: 11/21/2018] [Indexed: 11/28/2022]
Abstract
An 8-year-old female shih-tzu was assessed for a 3-year history of yellow intrastromal material in the right eye. Slit-lamp biomicroscopy showed a yellow lesion in the upper half of the cornea, superficial corneal neovascularisation and oedema with negative fluorescein staining in the right eye. Ultrasound biomicroscopy revealed a nearly anechoic cystic space surrounded by hyperechoic oedematous cornea separating the stroma at three-quarters of the corneal depth. Two partial-thickness corneal incisions were performed around the lesion under topical anaesthesia. After cytology and culture sampling, intrastromal flushing was performed. A yellow viscous necrotic tissue was identified with no microorganism or evidence of tumour formation. Antibiotics, anti-inflammatories and a bandage contact lens were applied. Ultrasound biomicroscopy confirmed no recurrence 8 days later. Corneal neovascularisation and oedema gradually resolved through a 2-week follow-up. There was no recurrence in the subsequent 8 months.
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Affiliation(s)
- S Kang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - E Park
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - K Seo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, 08826, Republic of Korea
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Ichizuka K, Seo K. Reply. Ultrasound Obstet Gynecol 2018; 52:125. [PMID: 29974591 DOI: 10.1002/uog.19089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- K Ichizuka
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, 35-1 Chigasaki chyuou Tsuzuki-ku Yokohama, Kanagawa, 224-8503, Japan
| | - K Seo
- Department of Obstetrics and Gynecology, Showa University Northern Yokohama Hospital, 35-1 Chigasaki chyuou Tsuzuki-ku Yokohama, Kanagawa, 224-8503, Japan
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18
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Kitazawa T, Ishigaki S, Seo K, Yoshino Y, Ota Y. Catheter-related bloodstream infection due to Rhodotorula mucilaginosa with normal serum (1→3)-β-D-glucan level. J Mycol Med 2018; 28:393-395. [PMID: 29661607 DOI: 10.1016/j.mycmed.2018.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 03/26/2018] [Accepted: 04/03/2018] [Indexed: 01/05/2023]
Abstract
Rhodotorula species are environmental basidiomycete yeasts that have emerged as a cause of fungemia in immunocompromised hosts. The insertion of a central venous catheter was identified as a major risk factor for Rhodotorula fungemia. Few cases reports have reported (1→3)-β-D-glucan testing at the onset of Rhodotorula mucilaginosa fungemia. We report a case of catheter-related bloodstream infection due to R. mucilaginosa. Serum β-D-glucan level was normal at the onset of the bloodstream infection. It took 5 days to culture the isolate. The patient's fever persisted after empiric treatment with micafungin, and a switch to oral voriconazole immediately resolved the fungemia.
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Affiliation(s)
- T Kitazawa
- Department of medicine, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, Japan.
| | - S Ishigaki
- Department of laboratory medicine, Teikyo University Hospital, Tokyo, Japan
| | - K Seo
- Department of medicine, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, Japan
| | - Y Yoshino
- Department of medicine, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, Japan
| | - Y Ota
- Department of medicine, Teikyo University, 2-11-1 Kaga, Itabashi-ku, Tokyo, Japan
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19
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Ahn JH, Park JH, Choi SY, Lee TK, Cho JH, Kim IH, Lee JC, Choi JH, Hwang IK, Lee E, Park S, Lim J, Lee YJ, Seo K, Won MH. The distribution of calbindinD-28k and parvalbumin immunoreactive neurons in the somatosensory area of the pigeon pallium. Anat Histol Embryol 2017; 47:64-70. [DOI: 10.1111/ahe.12325] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 10/21/2017] [Indexed: 12/15/2022]
Affiliation(s)
- J. H. Ahn
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - J. H. Park
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - S. Y. Choi
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - T.-K. Lee
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - J. H. Cho
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - I. H. Kim
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - J.-C. Lee
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - J. H. Choi
- Department of Anatomy; College of Veterinary Medicine; Kangwon National University; Chuncheon South Korea
| | - I. K. Hwang
- Department of Anatomy and Cell Biology; College of Veterinary Medicine; Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - E. Lee
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine; Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - S. Park
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine; Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - J. Lim
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine; Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - Y. J. Lee
- Department of Emergency Medicine; Seoul Hospital; College of Medicine; Sooncheonhyang University; Seoul South Korea
| | - K. Seo
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine; Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - M.-H. Won
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
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20
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Park JH, Ahn JH, Choi SY, Cho JH, Lee TK, Kim IH, Lee JC, Choi JH, Hwang IK, Lee YJ, Lee E, Park S, Lim J, Seo K, Won MH. The location of projection neurons to the biceps brachii muscle in the telencephalon of the pigeon. Anat Histol Embryol 2017; 46:528-532. [DOI: 10.1111/ahe.12297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 08/06/2017] [Indexed: 01/16/2023]
Affiliation(s)
- J. H. Park
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - J. H. Ahn
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - S. Y. Choi
- Department of Biomedical Science and Research Institute for Bioscience and Biotechnology; Hallym University; Chuncheon South Korea
| | - J. H. Cho
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - T.-K. Lee
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - I. H. Kim
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - J.-C. Lee
- Department of Neurobiology; School of Medicine; Kangwon National University; Chuncheon South Korea
| | - J. H. Choi
- Department of Anatomy; College of Veterinary Medicine; Kangwon National University; Chuncheon South Korea
| | - I. K. Hwang
- Department of Anatomy and Cell Biology; College of Veterinary Medicine, and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - Y. J. Lee
- Department of Emergency Medicine; Seoul Hospital; College of Medicine; Sooncheonhyang University; Seoul South Korea
| | - E. Lee
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - S. Park
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - J. Lim
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - K. Seo
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
| | - M.-H. Won
- Department of Veterinary Clinical Sciences; College of Veterinary Medicine and Research Institute for Veterinary Science; Seoul National University; Seoul South Korea
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21
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Dohi S, Ichizuka K, Matsuoka R, Seo K, Nagatsuka M, Sekizawa A. Coronary perfusion pressure and compression quality in maternal cardiopulmonary resuscitation in supine and left-lateral tilt positions: A prospective, crossover study using mannequins and swine models. Eur J Obstet Gynecol Reprod Biol 2017; 216:98-103. [DOI: 10.1016/j.ejogrb.2017.07.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 06/14/2017] [Accepted: 07/12/2017] [Indexed: 10/19/2022]
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22
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Seo K, Choi JW, Kim DW, Han D, Noh SJ, Jung HS. Aminophylline Effect on Renal Ischemia-Reperfusion Injury in Mice. Transplant Proc 2017; 49:358-365. [PMID: 28219599 DOI: 10.1016/j.transproceed.2016.11.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 10/01/2016] [Accepted: 11/16/2016] [Indexed: 01/25/2023]
Abstract
BACKGROUND Aminophylline increases the intracellular concentration of cAMP and exerts an anti-inflammatory effect. The aim of this study was to investigate the effect of aminophylline on renal ischemia-reperfusion (I/R) injury in mice. METHODS Thirty C57BL/6 mice were divided into 3 groups. In the sham group (group S, n = 10), only right nephrectomy was performed. In the control group (group C, n = 10), after right nephrectomy, the mice were subjected to 30 minutes of left renal ischemia. In the aminophylline group (group A, n = 10), an intraperitoneal injection of aminophylline (5 mg/kg) was performed before renal ischemia. Twenty-four hours after reperfusion, the mice were euthanized, and plasma and kidney samples were obtained to analyze the serum creatinine, renal histology, and expression levels of nuclear factor-kappa B (NF-kB) and pro-inflammatory cytokines. RESULTS The serum creatinine concentration in group C was markedly elevated at 24 hours after reperfusion. Aminophylline treatment significantly reduced serum creatinine, compared with group C. Aminophylline also reduced the histological evidence of renal damage. The expression levels of NF-kB, tumor necrosis factor-α (TNF-α), monocyte chemoattractant protein-1 (MCP-1), macrophage inflammatory protein-2 (MIP-2), and intercellular adhesion molecule-1 (ICAM-1) mRNA were significantly increased in group C (P < .001). Group A showed lower expression of NF-kB, TNF-α, MCP-1, MIP-2, and ICAM-1 mRNA than group C (P < .01). CONCLUSIONS Aminophylline treatment improved the renal function and indexes of renal inflammation, which suggests that it provided reno-protection against renal I/R injury.
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Affiliation(s)
- K Seo
- Department of Anesthesiology and Pain Medicine, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J W Choi
- Department of Anesthesiology and Pain Medicine, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - D-W Kim
- Department of Anesthesiology and Pain Medicine, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - D Han
- Department of Anesthesiology and Pain Medicine, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S J Noh
- The Research Institute of Medical Science, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - H S Jung
- Department of Anesthesiology and Pain Medicine, St Vincent's Hospital, The Catholic University of Korea, Seoul, Korea.
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23
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24
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Choi H, Le MT, Lee H, Choi MK, Cho HS, Nagasundarapandian S, Kwon OJ, Kim JH, Seo K, Park JK, Lee JH, Ho CS, Park C. Sequence variations of the locus-specific 5' untranslated regions of SLA class I genes and the development of a comprehensive genomic DNA-based high-resolution typing method for SLA-2. ACTA ACUST UNITED AC 2016; 86:255-66. [PMID: 26381046 DOI: 10.1111/tan.12648] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 06/30/2015] [Accepted: 08/03/2015] [Indexed: 11/30/2022]
Abstract
The genetic diversity of the major histocompatibility complex (MHC) class I molecules of pigs has not been well characterized. Therefore, the influence of MHC genetic diversity on the immune-related traits of pigs, including disease resistance and other MHC-dependent traits, is not well understood. Here, we attempted to develop an efficient method for systemic analysis of the polymorphisms in the epitope-binding region of swine leukocyte antigens (SLA) class I genes. We performed a comparative analysis of the last 92 bp of the 5' untranslated region (UTR) to the beginning of exon 4 of six SLA classical class I-related genes, SLA-1, -2, -3, -4, -5, and -9, from 36 different sequences. Based on this information, we developed a genomic polymerase chain reaction (PCR) and direct sequencing-based comprehensive typing method for SLA-2. We successfully typed SLA-2 from 400 pigs and 8 cell lines, consisting of 9 different pig breeds, and identified 49 SLA-2 alleles, including 31 previously reported alleles and 18 new alleles. We observed differences in the composition of SLA-2 alleles among different breeds. Our method can be used to study other SLA class I loci and to deepen our knowledge of MHC class I genes in pigs.
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Affiliation(s)
- H Choi
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - M T Le
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - H Lee
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - M-K Choi
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - H-S Cho
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | | | - O-J Kwon
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - J-H Kim
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
| | - K Seo
- College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - J-K Park
- Department of Swine and Poultry Science, Korea National College of Agriculture and Fisheries, Jeonju-si, South Korea
| | - J-H Lee
- Department of Animal Resource and Life Science, Chungnam National University, Daejeon, South Korea
| | - C-S Ho
- Histocompatibility Laboratory, Gift of Life Michigan, Ann Arbor, MI, USA
| | - C Park
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
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25
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Kitazawa T, Seo K, Koga I, Ota Y. Risk factors associated with persistence of staphylococcus aureus bacteremia. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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26
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Kim S, Hwang S, Jeong M, Lee Y, Lee E, Park Y, Ahn J, Kim S, Seo K. Clinical and microbiological effects of a subantimicrobial dose of oral doxycycline on periodontitis in dogs. Vet J 2016; 208:55-9. [DOI: 10.1016/j.tvjl.2015.10.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 10/01/2015] [Accepted: 10/04/2015] [Indexed: 10/22/2022]
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27
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Daniels NJ, Hyde E, Ghosh S, Seo K, Price KM, Hoshino K, Kaisho T, Okada T, Ronchese F. Antigen-specific cytotoxic T lymphocytes target airway CD103+ and CD11b+ dendritic cells to suppress allergic inflammation. Mucosal Immunol 2016; 9:229-39. [PMID: 26104914 DOI: 10.1038/mi.2015.55] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 05/19/2015] [Indexed: 02/04/2023]
Abstract
Allergic airway inflammation is driven by the recognition of inhaled allergen by T helper type 2 (Th2) cells in the airway and lung. Allergen-specific cytotoxic T lymphocytes (CTLs) can strongly reduce airway inflammation, however, the mechanism of their inhibitory activity is not fully defined. We used mouse models to show that allergen-specific CTLs reduced early cytokine production by Th2 cells in lung, and their subsequent accumulation and production of interleukin (IL)-4 and IL-13. In addition, treatment with specific CTLs also increased the proportion of caspase(+) dendritic cells (DCs) in mediastinal lymph node (MLN), and decreased the numbers of CD103(+) and CD11b(+) DCs in the lung. This decrease required expression of the cytotoxic mediator perforin in CTLs and of the appropriate MHC-antigen ligand on DCs, suggesting that direct CTL-DC contact was necessary. Lastly, lung imaging experiments revealed that in airway-challenged mice XCR1-GFP(+) DCs, corresponding to the CD103(+) DC subset, and XCR1-GFP(-) CD11c(+) cells, which include CD11b(+) DCs and alveolar macrophages, both clustered in the areas surrounding the small airways and were closely associated with allergen-specific CTLs. Thus, allergen-specific CTLs reduce allergic airway inflammation by depleting CD103(+) and CD11b(+) DC populations in the lung, and may constitute a mechanism through which allergic immune responses are regulated.
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Affiliation(s)
- N J Daniels
- Malaghan Institute of Medical Research, Wellington, New Zealand.,University of Otago, Wellington, New Zealand
| | - E Hyde
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - S Ghosh
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - K Seo
- Lab for Tissue Dynamics, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Japan
| | - K M Price
- Malaghan Institute of Medical Research, Wellington, New Zealand
| | - K Hoshino
- Laboratory for Inflammatory Regulation, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Japan.,Department of Immunology, Faculty of Medicine, Kagawa University, Kita-gun, Japan
| | - T Kaisho
- Laboratory for Inflammatory Regulation, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Japan.,Laboratory for Immune Regulation, World Premier International Immunology Frontier Research Center, Osaka University Suita, Osaka, Japan.,Department of Immunology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - T Okada
- Lab for Tissue Dynamics, RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Yokohama, Japan.,PRESTO, Japan Science and Technology Agency, Saitama, Japan.,Graduate School of Medical Life Science, Yokohama City University, Yokohama, Japan
| | - F Ronchese
- Malaghan Institute of Medical Research, Wellington, New Zealand
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28
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Kawabe K, Horiuchi F, Oka Y, Kondo S, Matsumoto M, Seo K, Ueno S. Neurocognitive assessment using coghealth battery in children with adhd before and after treatment. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Kitazawa T, Seo K, Wakabayashi Y, Suzuki S, Yoshino Y, Koga I, Ota Y. Do renin-angiotensin-aldosteron system inhibitors protect kidneys during vancomycin administration? Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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30
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Yoshino Y, Seo K, Koga I, Kitazawa T, Ota Y. P22 Rebamipide exerts a mucosal healing effect on the disrupted Caco-2 cell intestinal epithelium model by Clostridium difficile toxin B. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70267-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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31
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Le MT, Choi H, Choi MK, Nguyen DT, Kim JH, Seo HG, Cha SY, Seo K, Chun T, Schook LB, Park C. Comprehensive and high-resolution typing of swine leukocyte antigen DQA from genomic DNA and determination of 25 new SLA class II haplotypes. ACTA ACUST UNITED AC 2013; 80:528-35. [PMID: 23137324 DOI: 10.1111/tan.12017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We previously reported the development of genomic-DNA-based high-resolution genotyping methods for SLA-DQB1 and DRB1. Here, we report the successful typing of SLA-DQA using similar methodological principles. We designed a method for comprehensive genotyping of SLA-DQA using intronic sequence information of SLA-DQA exon 2 that we had obtained from 12 animals with different SLA-DQB1 genotypes. We expanded our typing to 76 selected animals with diverse DQB1 and DRB1 genotypes, 140 random animals from 7 pig breeds, and 3 wild boars. This resulted in the identification of 17 DQA alleles with 49 genotypes. Two new alleles were identified from wild boars. Combine with SLA-DQB1, and DRB1 typing results, we identified 34 SLA class II haplotypes including 25 that were previously unreported.
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Affiliation(s)
- M T Le
- Department of Animal Biotechnology, Konkuk University, Seoul, South Korea
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Abstract
Several studies have shown a higher prevalence of radiological abnormalities among gymnasts. However, the types of radiological abnormalities associated with low back pain (LBP) have not been clarified. The hypothesis was that significant relationships between radiological abnormalities and LBP may be revealed by discriminating between the types of MRI abnormalities while considering confounding factors. The subjects were 104 Japanese collegiate gymnasts (men, 70; women, 34). The presence of LBP was evaluated using the questionnaire developed by Osaka City University (OCU Test). Magnetic resonance imaging (MRI) abnormalities were evaluated using T1- and T2-weighted MRI. The prevalence of more than 1 MRI abnormality in gymnasts was 47.1% (49/104). The chi-square test showed that the incidence of lumbar disc degeneration (LDDG) and limbus vertebra was significantly greater in gymnasts with LBP than in gymnasts without LBP. By using logistic regression analysis to analyze the concomitant environmental variables, only LDDG (odds ratio, 2.70; 95% confidence interval, 1.10-6.66) was selected as a statistically significant variable accounting for LBP. In conclusion, LDDG is a predictor for LBP in Japanese collegiate gymnasts.
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Affiliation(s)
- K Koyama
- Department of Judotherapy, Tokyo Ariake University of Medical and Health Sciences, Tokyo, Japan.
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Moody M, Trama AM, Bonsignori M, Tsao C, Drinker MS, Gurley TC, Amos JD, Eudailey JA, Armand LC, Parks R, Lloyd KE, Wang S, Seo K, Lee J, Jackson KJ, Hoh R, Pham T, Roskin KM, Boyd SD, Fire AZ, Gray ES, Morris L, Liao H, Tomaras GD, Kepler TB, Kelsoe G, Haynes BF. Antibody lineages with evidence of somatic hypermutation persisting for >4 years in a South African subject with broad neutralizing activity. Retrovirology 2012. [PMCID: PMC3442051 DOI: 10.1186/1742-4690-9-s2-p85] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Seo K, Suzuki S, Kinoshita T, Hirasawa I. Effect of Ultrasonic Irradiation on the Crystallization of Sodium Acetate Trihydrate Utilized as Heat Storage Material. Chem Eng Technol 2012. [DOI: 10.1002/ceat.201100680] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Koyama K, Nakazato K, Min S, Gushiken K, Hatakeda Y, Seo K, Hiranuma K. COL11A1 gene is associated with limbus vertebra in gymnasts. Int J Sports Med 2012; 33:586-90. [PMID: 22510797 DOI: 10.1055/s-0031-1299752] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Several studies have shown higher frequencies of radiological abnormalities among gymnasts. Recently, the gene encoding the α1 chain of type XI collagen, (COL11A1) (rs 1676486), was associated with lumbar disc herniation in the Japanese population. We hypothesized that there was a significant relationship between abnormal magnetic resonance imaging (MRI) findings of the lumbar spine and the COL11A1 4603C/T gene polymorphism in collegiate gymnasts. Our study participants included 103 Japanese collegiate gymnasts (70 men and 33 women). Radiological abnormalities were evaluated using T1- and T2-weighted MRI. Genotyping for COL11A1 was performed for all the participants. By using logistic regression analysis, we observed significant associations between limbus vertebra and age (adjusted odds ratio=0.51, 95% confidence interval: 0.27-0.96), sporting experience (adjusted odds ratio=1.49, 95% confidence interval: 1.14-1.94), and a TT genotype (adjusted odds ratio=7.83, 95% confidence interval: 1.33-46.03). We conclude that a TT genotype of COL11A1 polymorphism may be a significant risk factor for limbus vertebra in Japanese collegiate gymnasts.
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Affiliation(s)
- K Koyama
- Department of Judotherapy, Tokyo Ariake University of Medical and Health Sciences, Tokyo, Japan.
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Prugovecki S, Beckers D, Seo K, Gateshki M. Using two-dimensional detectors for X-ray imaging. Acta Crystallogr A 2011. [DOI: 10.1107/s010876731108069x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Thong LM, Choi H, Kwon OJ, Kim JH, Kim YB, Oh JW, Seo K, Yeom SC, Lee WJ, Park C. Systematic analysis of swine leukocyte antigen-DRB1 nucleotide polymorphisms using genomic DNA-based high-resolution genotyping and identification of new alleles. ACTA ACUST UNITED AC 2011; 77:572-83. [PMID: 21457149 DOI: 10.1111/j.1399-0039.2011.01662.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
In an attempt to enable comprehensive high-resolution genotyping of the swine leukocyte antigen (SLA) gene, we performed a systemic analysis of nucleotide polymorphisms at introns 1 and 2 and exon 2 from diverse alleles of SLA-DRB1 and DRB1 pseudogenes. We amplified and cloned 16 partial sequences of SLA-DRB1 and DRB2 introns 1 and 2 from different alleles, and analyzed them together with sequences of four reported SLA-DRB pseudogenes, DRB2, 3, 4, and 5. The results showed the presence of extreme nucleotide variations within introns 1 and 2 of SLA-DRB-related genes including substitutions and deletions. On the basis of these results, we developed a comprehensive genotyping method for SLA-DRB1 by genomic polymerase chain reaction (PCR) and subsequent direct sequencing. A total of 415 animals were genotyped and 67 allelic combinations from 18 DRB1 alleles were identified. Among them, two alleles, SLA-DRB1*kn04 and *kn05, were previously unreported. SLA-DRB1 genotyping results from this study combined with those of SLA-DQB1 from our previous study presented 10 SLA class II haplotypes, three of which were previously unreported. Population analysis using seven different pig breeds showed differences in the allele frequency of SLA-DRB1 among breeds. Our results should benefit biological experiments requiring sequence-level genotyping results of SLA-DRB1 and further study of the complete genetic diversity of SLA-DRB1 using field samples.
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Affiliation(s)
- L Minh Thong
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
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Nguyen DT, Choi H, Jo H, Kim JH, Dirisala VR, Lee KT, Kim TH, Park KK, Seo K, Park C. Molecular characterization of the human ABO blood group orthologus system in pigs. Anim Genet 2011; 42:325-8. [PMID: 21554350 DOI: 10.1111/j.1365-2052.2010.02152.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The selection and use of animals with blood group 0 in the process of transplanting pig organs or tissues into humans can positively contribute to the control of acute immune rejection due to differences in blood groups. Exon-specific PCRs for the porcine blood group A transferase gene against genomic DNA from either blood group A or 0 animals resulted in the amplification failure of the A0 blood group gene exon 8 from blood group 0 animals. To characterize the genetic abnormality in the genome of blood group 0 animals, we screened bacterial artificial chromosome (BAC) clones from a Korean native pig BAC library which had the blood group 0 allele, and carried out shotgun sequencing. The analysis showed that the 0 allele has a large deletion between exon 7 of the A0 blood group gene and the neighbouring SURF6. We also showed that the ABO blood group antigens in humans and the A0 blood group antigens in pigs are coded by mutations within the orthologous glycosyltransferase gene. In addition, we developed a multiplex genotyping method for the porcine A0 blood group gene.
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Affiliation(s)
- D T Nguyen
- Department of Animal Biotechnology, Konkuk University, Hwayang-dong, Kwangjin-gu, Seoul 143-701, South Korea
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Lee S, Park JR, Seo MS, Roh KH, Park SB, Hwang JW, Sun B, Seo K, Lee YS, Kang SK, Jung JW, Kang KS. Histone deacetylase inhibitors decrease proliferation potential and multilineage differentiation capability of human mesenchymal stem cells. Cell Prolif 2009; 42:711-20. [PMID: 19689470 DOI: 10.1111/j.1365-2184.2009.00633.x] [Citation(s) in RCA: 116] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
OBJECTIVES Histone deacetylase (HDAC) is an important therapeutic target in cancer. Two of the main anticancer mechanisms of HDAC inhibitors are induction of terminal differentiation and inhibition of cell proliferation. To investigate the role of HDAC in maintenance of self-renewal and cell proliferation, we treated mesenchymal stem cells (MSCs) that originated from adipose tissue or umbilical cord blood with valproic acid (VPA) and sodium butyrate (NaBu). MATERIALS AND METHODS Human MSCs were isolated from mammary fat tissue and cord blood. We performed MTT assay and flow cytometry-based cell cycle analysis to assess self-renewal of MSCs. In vitro differentiation assays into osteogenic, adipogenic, neurogenic and chondrogenic lineages were conducted to investigate MSC multipotency. Immunocytochemistry, Western blot and reverse transcription-polymerase chain reaction were used to interrogate molecular pathways. RESULTS VPA and NaBu flattened the morphology of MSCs and inhibited their growth. VPA and NaBu activated the transcription of p21(CIP1/WAF1) by increasing the acetylation of histone H3 and H4 and eventually blocked the cell cycle at G2/M phase. The expression level of p16(INK4A), a cdk inhibitor that is closely related to cellular senescence, was not changed by HDAC inhibitor treatment. We performed controlled differentiation into bone, fat, cartilage and nervous tissue to elucidate the role of HDAC in the pluripotency of MSC to differentiate into functional tissues. VPA and NaBu decreased the efficiency of adipogenic, chondrogenic, and neurogenic differentiation as visualized by specific staining and reverse transcription-polymerase chain reaction. In contrast, osteogenic differentiation was elevated by HDAC inhibitor treatment. CONCLUSION HDAC activity is essential for maintaining the self-renewal and pluripotency of MSCs.
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Affiliation(s)
- S Lee
- Adult Stem Cell Research Center, Seoul National University, Seoul, South Korea
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Kizu K, Tsuchiya K, Shimada K, Ando T, Hishinuma Y, Koizumi N, Matsukawa M, Miura Y, Nishimura A, Okuno K, Seo K, Takahata K, Tamai H, Yamada S. Evaluation of bending strain dependence of critical current of Nb3Al conductor for coils with react-and-wind method. Fusion Engineering and Design 2007. [DOI: 10.1016/j.fusengdes.2007.03.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Jin SS, Min Y, Kim H, Ahn J, Jegal Y, Seo K, Park C, Shin J, Cha H, Kwon W, Park J. Prospective phase II trial of a combination of gemcitabine, cisplatin and UFT as first-line treatment in patients with advanced, unresectable, non-small cell lung carcinoma. J Clin Oncol 2007. [DOI: 10.1200/jco.2007.25.18_suppl.18109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
18109 Background: Most patients with advanced non-small cell lung cancer (NSCLC) receive either single agents or doublet chemotherapy. For non-elderly patients in good performance status, platinum-based double combinations represent the standard treatment. And oral UFT had the survival advantage in adjuvant setting. Therefore we performed a phase II study using the combination of gemcitabine, cisplatin and UFT as a first line therapy in patients with advanced NSCLC. Methods: Eligible patients had histologically or cytologically confirmed stage IIIB or IV NSCLC with good performance status and were chemotherapy-naive. This study was two-stage design and planned number of patients was forty-seven. Gemcitabine (1,250 mg/m2, 10 mg/kg/min on days 1 and 8) and cisplatin (75 mg/m2 on day 1) were injected intravenously and UFT (400 mg/day) was administered orally on day 1–14. Treatment repeated every 3 weeks. Primary end point was overall response rate and secondary end points were overall survival, time to progression and toxicity. Results: Thirty seven patients with advanced NSCLC were enrolled. The median age of the patients was 60 years (range: 44 to 72). The performance status (WHO) was 0 in 4, 1 in 30 and 2 in 3 patients. Twenty three patients completed six cycles. Complete response was achieved in 1 (3%) patient, partial response in 22 (59%) patients, stable disease in 9 (24%) patients. Overall response rate was 62% on intent to treat basis. Among patients who response evaluation was possible (33 patients), response rate was 70%. The median survival time was 14.5 months (95% CI 6.9, 22.3) and the 1 year survival was 35% and then median time to progression was 3.4 months(95% CI 3, 3.9). Toxicities were moderate and mostly hematological adverse events. Grade 3/4 neutropenia occurred in 37%, 5 patients with febrile neutropenia. Grade 3/4 anemia and thrombocypenia was occurred in 37% and 5%. Nonhematologic toxicities were mild. Conclusion: The combination therapy consisted of gemcitabine, cisplatin and UFT is active and well tolerable first line regimen for NSCLC patients. No significant financial relationships to disclose.
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Affiliation(s)
- S. S. Jin
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - Y. Min
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - H. Kim
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - J. Ahn
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - Y. Jegal
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - K. Seo
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - C. Park
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - J. Shin
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - H. Cha
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - W. Kwon
- Ulsan University Hospital, Ulsan, Republic of Korea
| | - J. Park
- Ulsan University Hospital, Ulsan, Republic of Korea
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Asai T, Koike S, Seo K, Nunome H, Sakashita R. AERODYNAMICS OF KNUCKLE EFFECT IN SOCCER. J Biomech 2007. [DOI: 10.1016/s0021-9290(07)70190-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sagara A, Mitarai O, Imagawa S, Morisaki T, Tanaka T, Mizuguchi N, Dolan T, Miyazawa J, Takahata K, Chikaraishi H, Yamada S, Seo K, Sakamoto R, Masuzaki S, Muroga T, Yamada H, Fukada S, Hashizume H, Yamazaki K, Mito T, Kaneko O, Mutoh T, Ohyabu N, Noda N, Komori A, Sudo S, Motojima O. Conceptual design activities and key issues on LHD-type reactor FFHR. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2006.07.057] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Seo K, Hishinuma Y, Nishimura A, Nishijima G, Watanabe K, Nakamura K, Takao T, Katagiri K. Comparison of avalanche-like quenches between NbTi and Nb3Sn cables. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2006.07.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Hemmi T, Yanagi N, Bansal G, Seo K, Takahata K, Mito T. Electromagnetic behavior of HTS coils in persistent current operations. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2006.07.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Yanagi N, Seo K, Imagawa S, Sekiguchi H, Takahata K, Yamada S, Mito T, Ishigohka T, Ninomiya A. Pulse height analysis on the balance voltage and acoustic emission signals for the LHD superconducting coils. Fusion Engineering and Design 2006. [DOI: 10.1016/j.fusengdes.2006.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lee JC, Hwang IK, Park SK, Yoo KY, Seo K, Kang TC, Oh YS, Won MH. Histochemical and Electron Microscopic Study on Motor Neurone Degeneration Following Transient Spinal Cord Ischaemia at Normothermic Conditions in Rabbits. Anat Histol Embryol 2005; 34:252-7. [PMID: 15996127 DOI: 10.1111/j.1439-0264.2005.00603.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was carried out to investigate the motor neurone degeneration in the ventral horn following transient spinal cord ischaemia at normothermic conditions in rabbits. Transient spinal cord ischaemia was induced by occlusion of the abdominal aorta underneath the left renal artery for 15 min at normothermia (38.7 degrees C). Sections at the level of L7 were examined using histochemical and electron microscopic methods. Cresyl violet-positive motor neurones began to reduce in number at 3 h after ischaemia reperfusion, and were not detectable at 48 h after ischaemia reperfusion. Acid fuchsin-positive motor neurones were detected at 1 h after ischaemia reperfusion, significantly increased up to 6 h after the ischaemia reperfusion, and eventually disappeared by 48 h after ischaemia reperfusion. In electron microscopic findings, the disintegration of cytoplasmic membranes, and the disruption of mitochondria and endoplasmic reticulum were observed in motor neurones at 30 min after ischaemia reperfusion. Motor neurones showed necrotic findings with pyknotic degeneration at 1 h after ischaemia reperfusion. The necrotic degeneration became severer time dependently after ischaemia reperfusion. At 48 h after ischaemia reperfusion, cellular components were not detectable in motor neurones. In conclusion, we suggest that the degeneration pattern of motor neurones of the ischaemic spinal cord was necrotic after ischaemia reperfusion under normothermic conditions.
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Affiliation(s)
- J-C Lee
- Department of Pharmacology, Ewha Medical School, Ewha Institute of Neuroscience, Ewha Womans University, Seoul 110-783, South Korea
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